Name: Mihir. Gender: Male. Usage: Mihir is a popular first name. It is more often used as a boy (male) name. People having the name Mihir are in general originating from India.
An increased amount of blade dragging through the material when cutting fine detail can cause, what they call, vinyl ears (parts lifted up). With minimal blade in the material, a 60 degree blade tends to cause fewer, if any, vinyl ears.
Serrated blades are great for cutting thick foam. If you are cutting 3 inches thick or less try an Olfa L-2 utility knife. (Get the heavy duty blades for more dense material) These work great on spray foam, board type insulation, soft foam (for tool/pelican cases) etc. Good clean accurate cuts.